I'm not sure I understand the two supplies, or the voltage doubler. A single Hammond 270HX with a CLC supply and a choke (Hammond 159S) will be easier, and better, and probably cheaper too -- you can buy the pair for under $100.

If you drop the first cap low enough, the ripple on it allows the inductor to store energy and deliver it at a lower voltage to the second cap. It starts looking like a buck converter instead of just an LC filter.

Yes. Set the reporting delay for ~10 seconds. Then, set the simulation time for ~30ms. This will give you a good look at both the amount of ripple, and the shape of the ripple.

Quote:

Originally Posted by TheGimp

If you drop the first cap low enough, the ripple on it allows the inductor to store energy and deliver it at a lower voltage to the second cap. It starts looking like a buck converter instead of just an LC filter.

Kofi: A Hammond 270HX based supply would be full wave center tapped; you can change the bridge rectification in PSUD to full wave CT to reflect this. One difference between the two is that you need 2X voltage rated diodes in the FWCT config compared to bridge rectification.

Add V/1386L to your nominal current rating for the choke current rating to allow for ripple current if you are going to use a choke. (V is transformer secondary voltage & L is choke L).

I also used 1200V 8A Fairchild stealth diodes bypassed by 10nf 2Kv caps and a pair of Hammond 270EX transformers in my BH monos (orig schema).